Valve.



A. S. LINDKUVIST.

VALVE.

APPLIUATION IILED JUNE 22. 190B.

Patented Nov. 17, 1908.

m.,. me me attoamugs.

wil?" @ons UNITED .STATES PATENT oEEioE.

*AB-EL S. lLINDKUVIS'T, OFSPRINGDALE, PENNSYLVANIA.

VALVE.

Vlinterna-34o.

Speeiloationl of Lettersrlatent.

Patented Nov. I7,1`9U8.

`Application* led Inno 22,1908. leriaUNo-il.

particularly to an automatic shut-oli' valve for gas supply lines, the valve being designed to shut-off a supply of gas due to a reduction in the pressure within vthe gas supply pipe.

The primary object of my invention is to provide a novel valve wherein automatic means is employed for closing the valve when the pressure within a gas supply pipe is reduced or shut olf, the valve remaining in a closed positionunless manually actuated to allow gas to pass through the same.

My invention vaims to provide a valve of the above type that will be simple in construction, durable, and positive in its action.

The valve has beenfparticularly designed for gas supply pipes communicating with burners, and it is in this connection that my valve prevents a waste of gas and possibly asphyxiation.

The detailfconstruction entering .into my invention will be presently described and then specifically pointed out in the appended claims.

In the drawings Figure 1 is a side elevation of a valve constructed in' accordance with my invention, and Fig. 2 is a longitudinal sectional view of the same.

In the accompanying drawings 1 designates a' globular valve body havi an integral communicating hollow extenslon 2 provided with an outlet port 3 in which is threaded a pipe 4 adapted to communicate with a gas burner (not shown). The extension 2 1s .provided with an opening 5 normally closed by a plate 6, secured thereto by screws 7 entering the lugs 8 protruding into the opening 5 of the extension 2.

The globular body 1 has an inlet port 9 in which is threaded a gas supply pipe 10, and the body 1A is provided with a horizontal partition 11 joined to the upper part of the body as at 12, and to the lower part of the body vas at 13, dividing the valve body into practically two compartments. The horizontal partition 11 is provided with a centrallinteriorlythreaded opening14 for a detachable'annulus or ring 15 havin a central opening .'-1'6 4'formed'therein .lari .a valve seat- 17.

The valve body 1 is. formed with'a vertical interiorly and exteriorly threaded` ex' tension 1-8. 'Screwedfin the extension 18 is a cylindrical cage 19 having depending pins 20 Ifor engaging inlthe annulus orrin'g 15. The cage 19 is provided with 'an opening 21 and-with avalve'seat122. The' upper end of the cage 19 is provided with oppositely dis- 'posedrecesses or sockets 23, whereby a spanner `wrench or suitable instrument (not shown) can be used :for placing the cage in position. In the cage 19 is arranged a .spherical valve24, adapted in Aoneposition to close the opening 16 andin another position to engagein the seat 22 of the. catch 19. The valve 24 isjprovided with an upwardly extending in 25 having the upper end thereofkno bed, as at 26. The pin 25 extends 'through a nipple'27 secured in the cap 28 screwed upon the extension 18. The nipple 27 is normally closed byr an -auxiliary cap 29.

Pivotally mounted within :the boxlike structure 2, preferably-by-a screw 430 is a curved lever 31 extendingl downwardlyinto the'body 1 beneath the horizontal partition 11. This end of the lever 31 is slotted, as at 32, and is loosely connected by a pin 33 to the biurcated end of the frame 34, which is attached to'the spherical valve 5. The opposite end of the lever 31 is provided with an adjustable weight 35 normally held in a lixed position upon the lever 31 by a screw 36. With the valve in the osition illustrated. in Fi 2 of the drawmgs, the pressure of gas a ove the partition 11 normally holds the spherical valve 24 lupon the seat 17. By removing the resilient cap 29 and manually elevating the pin 25, the spherical valve 24 engages the seat 22 and is held in this raised position while the pressure of gas passes through thev opening 16 into the pipe 4, but should the pressure of gas in the pipe 10 be reduced or the gas shut olf, the spherical valve 24 immediately descends and closes the opening 16, the valve 24 being of a suiiicient weight to overbalance the weight 35, when the pressure is reduced or shut oi beneath the valve 24. Should the gas be turned on or the pressure increased, it is impossible :tor the valve 24 to open with the pressure above said valve. It is therefore through the Imedium lof the pin 25. The cap 29 prevents the valve from being tampered wlth and prevents gas from escaping,

except when' the'cap is vrremoved to -elevate the ,pin 25. Y The cover orvplate 6 is provided whereby easyaccess'lcan be had to the interior `of the extension 2 lfor adjusting thel wei ht 35 4of the curved lever 31.

bile inthe drawings forming a part of Vthis application there is illustrated the preferre sire it to lbe understood that the elementstherein .can be varied orchanged as to the Aembodiments of my invention, I deshape, proportion and exact manner of .assemblage without departing from the splrlt of. the lnvention.

Having now vdescribed my invention what I claim as new, is

LA valve of the type described comprising a globularbody having a vhollow extension provided-*with agas outlet port, said globular body having a gas inlet ort, a horizontal partition arranged in sai body and dividing said body 1n two compartments, said artition having an opening formed therein, a ringI detachably mounted in the opening of said partition, said ring having an opening formed therein, a cage detachably mounted in said body and engaging said ring, said cage having'an opening formed therein to establish communication between thelopenjng of said ring and said inlet port, a spherical valve mounted in said cage and ladapted to close the olpening of sald ring, a cap mounted upon sai dbody and' inclosi said cage, a nipple carried by'sald cap, a pin carried by sald valve and extending upwardly through said nipple, an auxil- -hollow extension and connectingfwith said iary cap mounted `upon said nipple, and a 40 wel hted curved lever pivotally mounted in sai hollow extension andconnecting with said valve, substantially as described.

- v 2. A valve of the ty e described comprising a globular body, a ollow extension car-15 rled thereby, a horizontal artition arran ed 1n sald body, a ring detac ably mounte in said partition, said ring havin an opening formed therein, a 'cage detacha ly mounte in saidbody, a valve mounted in said cage and` adapted to close the o ening of sald ring, a pm carried by said vave andextending 'upwardly through vsaid cap, and a weighted lever pivotally mounted in said valve.

3. A valve of the ty e described comprising a valve body, a ho 'ow extension carried thereby, a partition arranged in said valve body, a ring mounted in said partition and having an opening formed therein, a cage/ detachably mounted in said'body, a spherical valve arranged in said cagey f0r`closing the opening in said ring, a cap mounted upon said body for retainingsald cage in position, a weighted pivotally mounted lever arranged in said hollow'extension and connecting with said valve, and means carried by said valve and extending through said cap for facilitating the manual elevation-of said valve.

In testimony whereof'I aix my signature in the presence of two Witnesses. 

